Furnace Repair in Belfast, ME
Furnaces here run from September through May. If yours quits, tell us what it's doing and a licensed contractor who covers Waldo County will get in touch.
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Nine months of heat, and a grid that doesn't always hold up
In Belfast, your furnace runs from September through May. That is nine months of the year it has to work, and on winter nights that average 14°F, it runs long and often to keep the house warm. Over half the homes in the county heat with fuel oil, and an oil furnace under that kind of load depends on a clean burner and a good igniter to start each cycle without a fight.
Waldo County has seen 79 winter storms and 34 damaging wind events over the past ten years. Storms like that knock out power, and in 2024 more than half of Maine households lost power for 24 hours or more at some point. A furnace with no power will not run at all, and when the power comes back, some won't restart on their own. If your house is cold and the thermostat is dark, that is the first thing to check.
- 9 months
- September through May, your furnace is on duty
- 14°F
- the average winter night it heats against
- 79 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
- Why won't my furnace turn on?
- Start with the thermostat and the power switch, since a dead battery or a switch bumped to off will stop the furnace before anything else does. Check the breaker too, since a tripped one cuts power without any other sign. If those are fine, the igniter may have failed, or the flame sensor may be telling the control board not to fire. Fuel oil furnaces also need oil in the tank and a clear line, so check the tank level if that's what heats your home. With 51.3% of homes here running on fuel oil, a furnace that won't start after a delivery gap or a cold snap is often just out of fuel or fighting a clogged line. A contractor can test the igniter, the sensor and the burner to find which one is actually at fault.
- Why is my furnace blowing cold air?
- Most often this means the burner isn't igniting, so the blower is running but there's no flame to heat the air passing over it. It can also mean the furnace is in a startup delay, where cool air moves for a short stretch before the burner catches. If the air stays cold, the igniter or the flame sensor is a likely cause, or the gas valve isn't opening. On oil furnaces, a clogged nozzle or a dirty filter can keep the burner from lighting at all. With winter lows here averaging 14°F, a furnace stuck blowing cold air needs attention quickly. A contractor can check the burner, the igniter and the fuel supply to find where the heat is being lost.
- Why won't my furnace pilot light stay lit?
- This usually means the thermocouple, the small sensor that proves the pilot flame is burning, has worn out or shifted out of position. When it doesn't sense the flame correctly, it shuts the gas valve as a safety measure, even though the pilot is lit. A draft near the pilot can also blow it out, so check whether anything nearby, like a vent or a door, is pushing air toward it. A dirty pilot orifice or a failing gas valve are other possibilities. A standing pilot doesn't use electricity, so a power outage won't be the cause here, but with 54% of Maine households losing power for at least 24 hours in 2024, it's worth ruling out other causes first if the outage happened around the same time. A contractor can test the thermocouple and the gas valve to find the actual fault.